外面正在下大雨,请带上雨伞.用英语怎么说?大雨要用上heavy

it's rainging hard outside, so please take an umbrella.

Outside it is now raining，take an umbralla with you

It is a heavy rain outside, please bring an umbrella.

It is raining heavily outside,take your umbrella,with you,please~~

It's raining heavily outside .Please take an unbrella with you.
希望对你有帮助。

It is raining heavily outside,please take the umbrella with you.

It is raining heavily outside.Remember to bring an umbralla with you.
补充,要用heavily,是heavy的副词形式

outside is having a heavy rain, please bring an umbrella